Lock for loom shuttles



y 1941- T. J. HOWELL 2,248,872

LOCK FOR LOOM SHUTTLES Filed April 10, 1940 QUINN I M 11 2!" lllllllllll I :Ilz'owell INVENTOR.

ATTORNEYS.

Patented July 8, 1941 LOCK FOR LOOMSHU-TTLES Thomas J. Ho well, Anniston, fAla-i, assignor of one-half to Hugh Connor, Anniston, iAla. Application April 10, 1940, Serial No. 328,945

2 Claims. (cij iag -i ss This invention relates to shuttle locks, the primary object of the invention being to provide means for temporarily holding the shuttles of a loom within their boxes, with each movement of the shuttles, thereby preventing bouncing or rebounding oi the shuttles.

An important object of the invention is to provide means for preventing improper boxing of the shuttles which results in a kinky filling, and which is usually caused by a weak or improperly adjusted check strap.

Another object of the invention is the provision of means to permit the shuttles of a loom to be driven from their boxes with appreciably less power than customarily used, thereby greatly reducing wear, tear and vibrations caused by the force used in driving the shuttles.

A still further object of the invention is to provide a lock which will operate at the end of the stroke of a picker, the locking pressure being brought to bear on the shuttle at the instant of contact of the shuttleagainst the picker stick.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein described, may be made within the scope of what is claimed, Without departing from the spirit of the invention.

Referring to the drawing:

Figure 1 is a plan of a device constructed in accordance with the invention, showing the device a holding or looking a shuttle.

Figure 2 is a side elevational view thereof.

Figure 3 is a sectional view taken on line 33 of Figure 2.

Figure 4 is a sectional view taken on line 4-4 of Figure 1.

Referring to the drawing in detail, the reference character 5 designates the lay beam of a loom to which the wall 6 of the shuttle boxing is secured, as by means of bolts I.

The shuttle lock embodies a bar 8 which is pivotally connected to the lay beam, at one end of the bar, the bar having a cut-away portion formed at its pivoted end, for the reception of the spacer 9 formed at the lower end of the bearing sleeve ID that is mounted on the bolt I I disclosed as extended through the lay beam 5. Due to this construction, it will be seen that the bar 8 will be held against wobbling or uneven movement, and will be permitted to swing freely, under the action of the shuttle.

fis clearly' slrwn by Figure '11 of the drawing, the inner edge of th'e' bar8 is curvd andis cov ered with a strip of leather I2 to withstand wear and at the same time set up friction between the shuttle and bar, to insure the operation of the device.

The device also comprises a rod I3 slidably mounted in the bearing I4, one end of the rod I3 being extended inwardly as at I5, the inwardly extended end I5 of the rod I3 lying in the path of travel of the picker stick I6.

This rod I3 is formed with threads at one end thereof, the threaded end of the rod extending into the threaded end of the yoke II, securing the yoke and rod together. Nuts I8 are positioned on the rod I3 and are adapted to adjustably secure the yoke to the rod I3.

Mounted at one side of the lay beam 5, is a bracket I9 that provides a support for the bolt 20 on which the arm 2| is pivotally mounted. This arm 2| is formed with a curved end portion 22 that engages the outer edge of the bar 8, and moves the bar 8 inwardly towards the shuttle moving into the shuttle box, the shuttle in the present showing being indicated by the reference character 23.

On the upper end of the bolt 20, is a plate 23' having an ear formed with an opening into which one end of the spring 24 is hooked, the opposite end of the spring 24 bein hooked into the opening formed in one end of the collar 25 which is secured on the rod I3, adjacent to the yoke IT. This spring will act to return the rod I3 and bar 8 to their normal inactive positions, after the shuttle has passed from the shuttle box after the stroke or pick has been completed.

From the foregoing it will be seen that due to the construction shown and described, a shuttle passing into the shuttle box, will strike the picker stick which in turn is forced into engagement with the inwardly extended end I5 of the rod I3. The rod I3 will be moved towards the outer end of the lay beam, with the result that the arm 2| will be swung into engagement with the bar 8, moving the bar 8 into close engagement with the shuttle 23. It will also be seen that the locking pressure is brought to bear on the shuttle at the instant of contact of the shuttle against the picker stick to the end that the lock will operate without unnecessary pressure being brought to bear on the shuttle by the shuttle box binding against the shuttle, thereby reducing the power required to drive the shuttle from the box, to the minimiun.

What is claimed is:

1. A device for checking the movements of a shuttle within the shuttle box of a loom having a picker check, comprising a pivoted member mounted on the loom beam and cooperating with the loom in gripping a shuttle, a bearing secured to the outer surface of the pivoted member, a rod slidably mounted in said bearing and having a right angled end lying in the path of travel of the picker stick and adapted to be engaged by the picker stick when the picker stick is moved by the action of the shuttle striking the picker stick, a bracket mounted on the loom beam, an

arm pivotally mounted on the bracket, said rod cates, and a coiled spring connected with the arm and rod and adapted to normally urge said arm away from said pivoted member.

2. A device for checking the movements of a shuttle within the shuttle box of a loom having a picker check, comprising a pivoted member, a bolt extending upwardly through the lay beam of the loom and providing a bearing for said pivoted member, the lower surface of the pivoted member being cut-away at the pivot end of the pivoted member, a spacer on the bolt and disposed within the cut-out portion of the pivoted member, said spacer adapted to hold the pivoted member against Wobbling, a rod mounted formovement longitudinally of the pivoted member, one end of the rod extending laterally in the path of travel of the picker stick, a pivoted arm at one end of said rod, and said arm adapted to move said pivoted member into engagement with the shuttle, restricting movement of the shuttle when the rod'is moved longitudinally of the pivoted memher, by the action of the picker stick.

THOMAS J. HOWELL. 

